im not sure if this helps or not, but i have seen these types of vents used on geodesic greenhouses:

How automatic vent openers work: Vent openers do not require electricity. The opener has a metal cylinder containing a mineral which expands when heated. This pushes a piston that opens the vent. As the temperature cools, the mineral shrinks and a spring closes the vent and resets the piston. The opening and closing of the vent is gradual allowing just the right amount of air flow for cooling.

found a source for a few ibc totes, may put in a small aquaponics systems as well, we will see.

Matthew Gorham

Posts: 42

Location: Upper Kingsclear NB, Canada

5

posted 2 years ago

3

beds are all done, and now time to finish insulating

beds.jpeg

Lee Daniels

Posts: 63

Location: Eastern WA -- 5b-6a

3

posted 2 years ago

Coming along nicely. Is there anything under the raised bed floor insulation? Looks like 1" ridged foam board on top of compacted crushed rock. Any plans to heat the bed? Or just insulate.

- L. Daniels

Matthew Gorham

Posts: 42

Location: Upper Kingsclear NB, Canada

5

posted 2 years ago

I may pipe some hot air in from the top of the dome, but currently have no plans for a heating system. Would love to do a RMH, but need to do more research.

Matthew Gorham

Posts: 42

Location: Upper Kingsclear NB, Canada

5

posted 2 years ago

Aquaponics tank and bed setup, plumbings next.

image.jpg

Alex Goozoon

Posts: 19

posted 2 years ago

great project
please how did you layed the dome and ponywall? directly on the ground? or what is it? Have you used cedar wood or some hydroisolation?
Where have you placed the entrance, please?

You used foil for covering, do you think to have greens in the winter, too?

thanks

Matthew Gorham

Posts: 42

Location: Upper Kingsclear NB, Canada

5

posted 2 years ago

Alex Goozoon wrote:great project
please how did you layed the dome and ponywall? directly on the ground? or what is it? Have you used cedar wood or some hydroisolation?
Where have you placed the entrance, please?

You used foil for covering, do you think to have greens in the winter, too?

thanks

Hey Alex,

I built my dome directly on gravel and it drains very well.. The dome is made out of hemlock which i pretty rot resistant. IT is covered in 8mm poly that is uv protected. I dont think i will be able to grow in the winter but should be able to get 2-3 extra months of grow season.

this is where the door is located,

Capture.JPG

Alex Goozoon

Posts: 19

posted 2 years ago

do you have a closer look to 8mm poly you used? or url to check? please
and what about the entrance? south, south-east?